backlinkchecker.io

Backlinkchecker.io is a free backlink analysis page where anyone can enter a URL or domain and see its backlinks within seconds. Results show Domain Authority, Page Rank and Spam Score so the strongest links stand out, and a unique backlinks only filter trims duplicates. A bulk mode checks many URLs at once and exports the results to CSV or Excel, which suits agencies and SEO professionals checking several clients. No signup is needed, and the tool is free to use. The data comes from the Keywords Everywhere API. Single and bulk modes sit side by side, so one domain can be checked quickly or a whole list of client sites reviewed in one pass, and the authority metrics help pick out the most valuable links in a profile.